Komatsu Part BOLT 21W-46-38680

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Product Overview

The 21W-46-38680 BOLT is a genuine Komatsu OEM replacement bolt. Every bolted joint on your machine is designed around a specific bolt grade, thread pitch, and length. Using the wrong bolt compromises the joint's clamping force and can lead to loosening or failure under load.

Part Number: 21W-46-38680 Part Name: BOLT Part Type: OEM Komatsu Replacement Fastener Availability: In stock

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When to Replace

• Threads damaged or stretched
• Bolt head rounded or drive damaged
• Corrosion or pitting visible
• Removed from a critical joint — replace as specified

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Installation

1. Clean the threads — both bolt and mating hole
2. Apply thread locker if specified
3. Start by hand to avoid cross-threading
4. Tighten to torque using a calibrated wrench
5. Follow the tightening sequence for multi-bolt patterns

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Request a Quote

Need the Komatsu 21W-46-38680 BOLT? Contact us through the form or by phone, email, or WhatsApp. We respond within one business day.